Threshold filters (Rev Newsletter #48)

[viktoras didziulis]

...from my observations put before tends to slow down with larger files. 
So put after is the fastest of all...
V.

Björnke von Gierke wrote:
> A very interesting read, and it fits nicely into your expertise.
>
> However, you use "put into" in the last example (repeat for each). 
> This negates the speed gain you'd get by using "for each". try to use 
> "put after" or "put before". I made some tests, and it increased the 
> speed of the loop alone by up to 10% for me. Of course it also needs 
> double the ram :)